fix(core): purge partially generated assets on build failure

[Shreyansh1729]

Resolves #7379.

Description

Following the reviewer feedback on #7460, this PR addresses the root cause of the ImportError by ensuring that the build process cleans up (purges) any partially generated files if an exception occurs mid-run.

Changes

• Wrapped build generation steps in a try...except block in PackageBuilder.build.
• Triggers self._clean(modules) on failure to ensure a consistent workspace state.
• Added a regression test in test_package_builder.py to verify the purge behavior.

[deeleeramone]

Nice, this is a good solution @Shreyansh1729! To be helpful to the end user, I think it would be a good idea to include the traceback with the offending code as a console.log.error message + an instruction to set OPENBB_DEBUG_MODE='true' environment variable, then run openbb-build again to enable verbose output.

[Shreyansh1729]

Done! I've updated the PR to include full traceback logging and user instructions for OPENBB_DEBUG_MODE as suggested. I also updated the Console utility to ensure these critical build errors are always visible. Let me know if there's anything else!

[Shreyansh1729]

@deeleeramone any updates ?

[deeleeramone]

@Shreyansh1729, this is good thanks. There is an edge case here that we should probably catch in the outer try block as well, KeyboardInterrupt or signal.SIGTERM + signal.SIGINT. Currently, if the process is terminated - either by the user or programmatically - the partially generated modules survive. How do you think we can guard against that?